Straps

ABSTRACT

A strap consisting of a core of one or more skeins and a protective covering of flexible material around the core, said covering consisting of a hose or tube with an unbroken seamless wall.

United States Patent Norrman 1 Dec. 26, 1972 [54] STRAPS [56] ReferencesClted [72] Inventor: Ruben Henry Norrnrsn, Malmo, u rr STATES PATENTS1,524,009 l/l925 Armin........................292/3o1 n ux [73]Assignee: Spaniel Inter AG, Basel, Switzer- 2,259,9l7 10/1941 Wiuim ctsl. ..24/|6 PB [and 2,449,181 9/1948 Smiley ..40I2l C 3,265,554 8/1966Eldred ................24/l6 R [22] Filed: June 16. 1971 3,415,20410/1969 Donaldson ..24 I6 PB x l PP NM 153,?" FOREIGN PATENTS ORAPPLICATIONS 1,277,523 9/l968 Germany ..24l265 AL [30] ForeignApplication Priority Data Primary Examiner-Donald A. Griffin June 17,1970 Sweden ..8374l70 Auomey john Lczdey [52] 0.8. CI. ..24/16 R [51]Int. Cl. "use 0/00 [571 ABSTRACT [58] Field of Search ..24/ [6 R, [7 B,122.3, 122.6, A strap consisting of a core of one or more skeins and24/16 PB, 265 AL a protective covering of flexible material around thecore, said covering consisting of a hose or tube with an unbrokenseamless wall.

1 Claim, 4 Drawing Figures suns This invention relates to a strap of thekind used as a connecting means between a lifting or other handlingappliance and goods that are to be loaded or unloaded by means of saidappliance. The connecting means is in the form of a loop consisting of acore formed by one or more skeins, and a protective covering around saidcore.

The protective covering around previously known straps is realized byarranging a strip of flexible material and of suitable width around thecore and interconnecting the longitudinal strip edges by a seam. Sewingtogether the strip in the longitudinal direction is a timeconsumingwork, and however strong the material used, the resulting seam is theweakest link of the strap and breaks by far too early under theinfluence of the high stresses and the severe service conditions towhich the strap is exposed in use.

To eliminate the drawbacks outlined above, the strap according to theinvention has a protective covering formed by a hose or tube with anunbroken seamless wall.

The invention will be described more in detail hereinbelow withreference to the accompanying drawing in which:

FIG. 1 is a perspective view of a core formed by a skein;

FIG. 2 is a corresponding perspective view of a protective covering forthe core shown in FIG. 1;

FIG. 3 is a corresponding perspective view of a finished strap;

FIG. 4 is a section on line lV-lV in FIG. 3.

The finished strap 1 illustrated in FIG. 3 is of the kind used as aconnecting means between a lifting or other IOII handling appliance (notshown) and goods that are to be loaded or unloaded (or pulled) by meansof the appliance. The strap 1 is in the form of an endless loop offlexible material. The loop consists of a core 2 formed by one or moreskeins 3. For greater simplicity, only one of these skeins 3 is shown inFIG. 1. The two ends 4 of the skeins 3 are preferably interconnected,for instance tied together. Moreover, the strap consists of a protectivecovering around the core 2. said covering being formed in accordancewith the invention by a hose or tube 5 with an unbroken seamless wall 6(FIG. 4). Such a hose or tube 5 can be provided in various ways aroundthe core 2, but the methods most suitable in point of economy andpracticability are not part of the present invention. The hose or tube 5covers the entire core 2, and one end 7 of the hose or tube 5 isinserted in the other end 8. The ends 7 and 8 may also be joinedtogether in abutting relationship. The hose or tube 5 preferably is ofsuch a length in relation to the core 2 as to form transverse folds,thus being longer than the circumference of the loop, whereby the hoseor tube can adjust itself to the changes in length to which the strap issubjected in use.

Modifications are possible within the scope of the inventive ideadefined in the appended claims.

lclaim:

l. A strap for use as a connecting means between a lifting and otherhandling appliance and goods that are to be loaded or unloaded by meansof said appliance, said strap comprising a loop consisting of a coreformed by at least one skein, and a protective coverin around said core,said protective covering being a flexi le tube with an unbroken seamlesswall whereby there is formed an endless loop with said skein runningcontinuously turn by turn through the entire loop.

1. A strap for use as a connecting means between a lifting and otherhandling appliance and goods that are to be loaded or unloaded by meansof said appliance, said strap comprising a loop consisting of a coreformed by at least one skein, and a protective covering around saidcore, said protective covering being a flexible tube with an unbrokensEamless wall whereby there is formed an endless loop with said skeinrunning continuously turn by turn through the entire loop.